Diaby attended North Clayton High School in College Park, Georgia.

[1] Diaby attended Georgia Military College for two years before transferring to the University of Louisville.

[4] In Diaby's first year at Louisville in 2020, he started seven of eight games, recording 18 tackles.

[10] As a rookie, Diaby played in all 17 regular season games and made seven starts.

[11] In Week 18 of the 2024 season, Diaby recorded five tackles, four for a loss, and one sack in a 29-17 win over the New Orleans Saints, earning NFC Defensive Player of the Week.